We'll be doing some network maintenance on Friday, November 23rd, replacing
two core switch chassis that distribute the network to all buildings on campus.
We plan to start work at 9AM and anticipate that we should be finished no later
than 2PM.

The chassis are configured to be redundant, so the most you should notice
(if you should happen to be somewhere on campus that day) is a brief (5-10
seconds at most) interruption in access to all campus computing services, the
internet and phone calls from office phones. By design, the interruption should
actually be less than 2 seconds, but just in case, we wanted you to be
aware.